package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

/*
执行修改操作
 */
public class JDBCDemo3 {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection= DriverManager.getConnection
                ("jdbc:mysql://localhost:3307/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                        "root",
                        "root");
        System.out.println("与数据库建立连接");
        Statement statement = connection.createStatement();
        String sql="UPDATE userinfo  " +
                "SET password=123123  " +
                "WHERE id=4";
        int i = statement.executeUpdate(sql);
        if(i>0){
            System.out.println("修改成功");
        }else{
            System.out.println("修改失败");
        }
        statement.close();
        }
    }

